Its plastic toughness is lower than that of austenitic stainless steel, and its cold and hot working process and formability are not as good as that of austenitic stainless steel.
However, some people will still communicate online or by telephone to ask whether the stainless steel pipe we produce can be used as a water pipe.
.When using this process, the following key points should be paid attention to: during the welding process, the correct included angle between the welding handle, welding wire and weldment should be maintained. The ideal caster angle of the welding handle nozzle is 70 & deg; & mdash; 80 & deg;, and the included angle between the welding wire and the weldment surface is 15 & deg; & mdash; 20 & deg;; correct the molten pool temperature, change the included angle between the welding handle and weldment, change the welding speed, etc. to change the molten pool temperature, so as to ensure Beautiful weld formation (uniform width, no concave, convex and other defects) During operation, the current shall be slightly larger than that of solid core welding wire, and the welding handle shall be slightly adjusted to accelerate the separation of molten iron and molten flux coating, so as to facilitate the observation of molten pool and penetration; when filling the welding wire, it shall be sent to 12 places of molten pool and pressed inward slightly to ensure penetration and prevent concave; during welding, the welding wire shall be regularly sent and taken out, and the welding wire shall always be ensured Under the protection of argon to prevent the end of the welding wire from being oxidized and affect the welding quality; pay attention to the welding quality of the arc and arc stop, and the spot weld shall be polished to 45 & deg; the slope shall be gentle, and pay attention to the defects such as arc pit and shrinkage hole during arc stop.
The dual phase microstructure of stress corrosion resistant stainless steel is helpful to improve the stress corrosion cracking resistance of stainless steel. In the presence of certain temperature, stress, oxygen and chloride, chloride stress corrosion will occur in austenitic stainless steel. Since these conditions are not easy, the use of L and 317L is limited in this regard.
.Both ends of the steel pipe shall be cut into right angles and burrs shall be removed.
Hydraulic saw grinding disc (manual saw wire cutting machine).
According to the specification, the specification of stainless steel pipe is mainly based on gb14975-94 stainless steel seamless steel pipe. The general length (indefinite length) of precision stainless steel pipe and thick wall pipe is 5-10m for hot-rolled steel pipe and 1m or more for hot-rolled steel pipe. The wall thickness of cold drawn (rolled) stainless steel pipe is 0.5-0mm and the length is 0-7m; the wall thickness of stainless steel pipe is greater than 0mm and the length is 5-8m.
Japanese cold rolled non oriented silicon steel strip consists of nominal thickness (expanded by 100 times) + code a + iron loss guarantee value (the value after expanding the iron loss value when the frequency is 50Hz and the large magnetic flux density is 5T by 100 times). Provide various brand products such as stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe for a long time. The designated products are complete and the quality is guaranteed. For example, 50a470 means that the thickness is 0.5mm and the iron loss guarantee value is ≤ 7 cold rolled non oriented silicon steel strip.
Proper heat treatment process can prevent intergranular corrosion and obtain excellent corrosion resistance.
302— The corrosion resistance is the same and the strength is better because the carbon content is relatively high.
Latest quotation.The best choice is also frequently launched in the market. If you want to buy a stainless steel water supply pipe with quality assurance, how should you choose?
Tax included: the invoice contains 17% tax, so it will also affect subsequent quotations.
The difference between duplex stainless steel plate and ferritic 410 stainless steel plate: the comprehensive mechanical properties are better than ferritic stainless steel, which is not as brittle as ferritic stainless steel.
The requirements for weldability and weldability vary from product to product. A tableware usually does not need welding performance, and even includes some pot enterprises. However, most products require good welding performance of raw materials, such as class II tableware, thermos cup, steel pipe, water heater, water dispenser, etc.
Manufacturing cost.(VI) the growth rate of fixed asset investment in the iron and steel industry dropped significantly. From 2013 to June, the investment in fixed assets in the iron and steel industry was 303.5 billion yuan, a year-on-year increase of 3%, of which the investment in ferrous metal smelting and rolling was 235.6 billion yuan, a year-on-year increase of 3%, down 1 percentage point from the same period in 2012; The investment in ferrous metal mining and dressing was 67.9 billion yuan, the strength of the steel is greatly improved and the growth rate fell sharply by 15 percentage points.
Deformation strengthening of austenitic stainless steel stainless steel has good cold deformation performance. It can be cold drawn into very thin steel wire and cold rolled into very thin steel strip or steel pipe. After a large amount of deformation, especially when rolling in the subzero temperature zone. The tensile strength can reach more than 2000 MPa. This is because in addition to the cold hardening effect, there are also superimposed Deformation induced M transition.
While China's exported steel pipes are frequently subject to foreign anti-dumping and countervailing investigations, imported steel pipes are also constantly impacting domestic steel enterprises.
.The external anti-corrosion coating of stainless steel shall be galvanized and epoxy asphalt coating or coating with higher requirements according to the soil conditions of the pipe laying ground.
Hot rolled belt, stainless steel stretching belt, stainless steel polishing belt, stainless steel soft belt, stainless steel medium hard belt, stainless steel high temperature resistant belt, etc.
Cold rolled stainless steel strip; Stainless steel strip / coil & rdquo; As raw material, it is rolled by cold rolling mill at room temperature. General thickness & amp; lt; 0.1mm～3mm& gt; Width & amp; lt; 100mm～2000mm& gt;； [& ldquo; cold rolled steel strip / coil & rdquo;] has the advantages of smooth and smooth surface, high dimensional accuracy and good mechanical properties. Most products are rolled and can be processed into coated steel plate; Production process of cold rolled stainless steel strip / coil: 1. Pickling → 2. Normal temperature rolling → 3. Process → 4. Annealing → 5. Leveling → ⒍ fine cutting → ⒎ packaging → 8. Reach customers.